Abstract

Electrochemical Impedance Spectroscopy (EIS) is a powerful tool to get a deeper insight on the performance of high-temperature electrolysis cells. Indeed, when used in particular conditions, this technique allows distinguishing different phenomena contributing to electrochemical reactions and degradation mechanisms. Besides, the two-electrode configuration allows applying EIS to any kind of single cell. In this study, EIS and chronopotentiometry were combined in order to analyze the influence of the anode gas flow rate and composition on the electrochemical performance of a commercial cathode-supported cell, at different temperatures and current densities.

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